Hello,
I decided to go back into my TR-7 this afternoon and do some tweeking to my
previous alignment. (the S meter seemed to read higher than my other radios by
quite a bit). After re-setting the S-meter per the manual, I thought I'd go
back over the transmitter settings and lower the output somewhat. I had read
somewhere that Drake liked to set the ALC board at 120w instead of the called
for 140-150w. The purpose being purity of emissions. I'm using it mainly with
an L4B, so the extra 20-30 watts means little.
Per the manual, I set the carrier fully clockwise on 14mhz, keyed the radio and
set the ALC pot to about 120w. Then went to 28mhz and attempted to reset the
predriver board to get the alc light to go out. No can do. The pot is fully
CCW and no more there. I remember when I did the previous alignment set at
about 145w on 14mhz, and then on 28mhz, the alc light just started to dim at
fully CCW on the predriver.
Any comments as to what I should or should not be doing? PS, its sn 5300 or so
with the version 2 predriver.
Thanks,
David
Wd9cmd
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